1/2-x=7/2 - solution

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Solution for 1/2-x=7/2 equation:

x in (-oo:+oo)

1/2-x = 7/2 // - 7/2

1/2-x-(7/2) = 0

1/2-x-7/2 = 0

-x-3 = 0 // + 3

-x = 3 // * -1

x = -3

x = -3

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